The answer should be -14/16
Answer:
Inverse function: 
Step-by-step explanation:
The inverse of a functon
is the function
such that
.
In this problem, the function that we have to reverse is

In order to reverse the function, we do it in this way:
1) First, we isolate x and we write it as a function of y. Therefore:

2) Then, we exchange the names of the variables, so:

Therefore, the inverse function is

18 tablespoons 12 fits into 72 6 times and 6x3 is 18
Alright, so if the first number is x, the second number is y, and the third number is z, we have x+y+z=270. Next, since we know that x=y-1 since it is less than y by one and z=y+1, we have y-1+y+y+1=y+y+y=3y=270. Dividing both sides by 3, we get y=90